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Torsten

2008-Dec-06 21:30 UTC

[Xen-users] xen-3.3 missing xenbr0 new tmpbridge

Hallo xen-user,

after compile and install src/xen-3.3.0
xenbr0 missing.

Network to DomU works,
but xenbr0 missing.
Is xenbr0 no more needed?

I need xenbr0 for the binding TAP for qemu on dom0.

Whats going wrong?

I accomplished some tests.
Without result.

regards Torsten



-----------------------------------------------------------------
lati:~# ifconfig | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lati:~# ifconfig -a | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
veth0     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth1     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth2     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.2    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.3    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF

lati:~# xm create vm1 -c

  - network to vm1 works.
    but xenbr0 missing


lati:~#  brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0015c5be8f93       no              peth0
                                                        vif1.0

vm1 # halt

lati:~# ifconfig | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lati:~# ifconfig -a | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
veth0     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth1     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth2     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.2    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.3    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF

lati:~# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0015c5be8f93       no              peth0
lati:~#



lati:/etc# egrep -v "^#| #" xen*/scripts/* | egrep
"xenbr|tmpbridge"
xen.old/scripts/network-bridge:bridge=${bridge:-xenbr${vifnum}}
xen/scripts/network-bridge:tdev=tmpbridge
xen/scripts/vif-bridge:  if [ ! -e "/sys/class/net/$bridge" ]
&& [ -z
"${bridge##xenbr*}"
]
xen/scripts/vif-bridge:     if [ -e
"/sys/class/net/eth${bridge#xenbr}/bridge" ]xen/scripts/vif-bridge:
bridge="eth${bridge#xenbr}"

  - xen-3.0: network-bridge:bridge=${bridge:-xenbr${vifnum}}
  - xen-3.3: network-bridge:tdev=tmpbridge


lati:/etc# grep "^(" xen*/xend-config.sxp  | egrep
"network|bridge"
xen.old/xend-config.sxp:(network-script network-bridge)
xen.old/xend-config.sxp:(vif-script vif-bridge)
xen/xend-config.sxp:(network-script network-bridge)
xen/xend-config.sxp:(vif-script vif-bridge)

  - identical


---------------------------------------------------------------

- test1 restart

lati:~# /etc/xen/scripts/network-bridge stop

lati:~# /etc/xen/scripts/network-bridge start

  - no errors
    no xenbr0
---------------------------------------------------------------
- test2 [2]

lati:~# ls  /var/lib/xend/state
cpu.xml  host.xml  local_sr  network.xml  pbd.xml  pif.xml  ppci.xml  sr.xml

mv /var/lib/xend/state /var/lib/xend/state.old
mkdir /var/lib/xend/state

  - dito
---------------------------------------------------------------
- test3 old network-bridge

cd /etc
/etc/xen/scripts/network-bridge stop

cp -a xen xen-3.3.bak
cp -a xen.old/scripts//network-bridge xen/scripts/

lati:/etc# /etc/xen/scripts/network-bridge start

  - no network on dom0
  - eth0 missing:

lati:/etc#  brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.0015c5be8f93       no              vif0.0
                                                        peth0
# ifconfig | grep "^[a-z]"
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
xenbr0    Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93

  -> not usable
---------------------------------------------------------------
- test4 (zu test3)

# ifconfig eth0 up

# ifconfig | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
xenbr0    Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93

  - new: eth0

 /etc/init.d/networking restart

#  ifconfig | grep "^[a-z]"
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
xenbr0    Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93

  - eth0 removed
---------------------------------------------------------------
- test5
  rm -fR /etc/xen
  src/xen-3.3.0# make install-tools
  cp -p /etc/xen.old/vm* /etc/xen
  reboot

  # ifconfig | grep "^[a-z]"
  eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
  lo        Link encap:Local Loopback
  peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93

  - no xenbr0

---------------------------------------------------------------
- test6  ppp0

# pon dsl
# xm create vm1 -c
# ifconfig | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
ppp0      Link encap:Point-to-Point Protocol

# ifconfig -a | grep "^[a-z]"
eth0      Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
lo        Link encap:Local Loopback
peth0     Link encap:Ethernet  HWaddr 00:15:C5:BE:8F:93
ppp0      Link encap:Point-to-Point Protocol
tmpbridge Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth0     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth1     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth2     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.2    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
vif0.3    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF

  - new: tmpbridge
    what is tmpbridge?


---------------------------------------------------------------

[1] http://lists.xensource.com/archives/html/xen-users/2008-11/msg00626.html
   [Xen-users] eth0 is down in dom0
[2] http://lists.xensource.com/archives/html/xen-users/2007-05/msg00257.html
   [Xen-users] Re: network-bridge fails leaving tmpbridge around
   rm -r /var/lib/xend/state




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Joseph L. Casale

2008-Dec-06 21:43 UTC

head link

RE: [Xen-users] xen-3.3 missing xenbr0 new tmpbridge

>after compile and install src/xen-3.3.0
>xenbr0 missing.
>lati:~#  brctl show
>bridge name     bridge id               STP enabled     interfaces
>eth0            8000.0015c5be8f93       no              peth0                                                        vif1.0
Torsten,
Notice your brctl show output? A while ago, xenbr{n} was renamed to
match the physical nic name while the physcial nic was renamed to peth{n},
so replace xenbr0 with eth0 in your vif bridge selection in the vm config and
use the current scripts...

jlc
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Torsten

2008-Dec-07 19:30 UTC

head link

[Xen-users] xen-3.3 missing xenbr0 new tmpbridge

Thanks,

I should be read my article still another 2. time...
xenbr0 was renamed to eth0, but why?

On [3] "Xen 3.2+ Networking" written: "eth0 and eth1 are the
bridge names..."
Me too find it is confusing.

[3] http://wiki.xensource.com/xenwiki/XenNetworking

it contains network-samples, but no config-examples and
predivide and disadvantages.


on xend-config.sxp written:
---%<---

# To bridge network traffic, like this:
#
# dom0: ----------------- bridge -> real eth0 -> the network
#                            |
# domU: fake eth0 -> vifN.0 -+
#
# use
#
# (network-script network-bridge)
....
# The bridge is named xenbr0, by default.  To rename the bridge, use
#
# (network-script ''network-bridge bridge=<name>'')

---%<---

It seen to be description and working to drift apart.

Ok...

- Test7 overwrite bridge-name

# diff xend-config.sxp.org xend-config.sxp
152c152,153
< (network-script network-bridge)
---> #(network-script network-bridge)
> (network-script ''network-bridge bridge=xenbr0'')
## network-bridge stop .. start || reboot

# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0015c5be8f93       no              peth0

  -> not working

How must it are configured that xenbr0 showing as before version 3.2 ?

regards torsten



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Thomas Halinka

2008-Dec-11 05:08 UTC

head link

Re: [Xen-users] xen-3.3 missing xenbr0 new tmpbridge

Am Sonntag, den 07.12.2008, 20:30 +0100 schrieb Torsten:> Thanks,
> 
> I should be read my article still another 2. time...
> xenbr0 was renamed to eth0, but why?
> 
> On [3] "Xen 3.2+ Networking" written: "eth0 and eth1 are the
bridge names..."
> Me too find it is confusing.
> 
> [3] http://wiki.xensource.com/xenwiki/XenNetworking
> 
> it contains network-samples, but no config-examples and
> predivide and disadvantages.
> 
> 
> on xend-config.sxp written:
> ---%<---
> 
> # To bridge network traffic, like this:
> #
> # dom0: ----------------- bridge -> real eth0 -> the network
> #                            |
> # domU: fake eth0 -> vifN.0 -+
> #
> # use
> #
> # (network-script network-bridge)
> ....
> # The bridge is named xenbr0, by default.  To rename the bridge, use
> #
> # (network-script ''network-bridge bridge=<name>'')
> 
> ---%<---
> 
> It seen to be description and working to drift apart.
> 
> Ok...
> 
> - Test7 overwrite bridge-name
> 
> # diff xend-config.sxp.org xend-config.sxp
> 152c152,153
> < (network-script network-bridge)
> ---
> > #(network-script network-bridge)
> > (network-script ''network-bridge bridge=xenbr0'')
> 
> ## network-bridge stop .. start || reboot
> 
> # brctl show
> bridge name     bridge id               STP enabled     interfaces
> eth0            8000.0015c5be8f93       no              peth0
> 
>   -> not working
> 
> How must it are configured that xenbr0 showing as before version 3.2 ?
i would recommend to write your own network-script 

something like

# vim /etc/xen/script/network-mynet

---------snip----------------
#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=eth0
bridge=xenbr0
------------snap-------

# chmod +x /etc/xen/script/network-mynet

edit xend-config.sxp

# /etc/init.d/xend restart

should do the job.> 
> regards torsten
hth,

Thomas


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Todd Deshane

2008-Dec-11 05:27 UTC

head link

Re: [Xen-users] xen-3.3 missing xenbr0 new tmpbridge

On Sun, Dec 7, 2008 at 2:30 PM, Torsten <tlehmann@fh-lausitz.de>
wrote:> Thanks,
>
> I should be read my article still another 2. time...
> xenbr0 was renamed to eth0, but why?
>
The reason for the change for xenbr0 to eth0:
http://xen.markmail.org/search/?q=xenbr0+eth0+list%3Acom.xensource.lists.xen-devel+rename#query:xenbr0%20eth0%20list%3Acom.xensource.lists.xen-devel%20rename+page:3+mid:t4amamj24lk2cswx+state:results

Cheers,
Todd

-- 
Todd Deshane
http://todddeshane.net
http://runningxen.com

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Xen users - Dec 2008 - xen-3.3 missing xenbr0 new tmpbridge

[Xen-users] xen-3.3 missing xenbr0 new tmpbridge

RE: [Xen-users] xen-3.3 missing xenbr0 new tmpbridge

[Xen-users] xen-3.3 missing xenbr0 new tmpbridge

Re: [Xen-users] xen-3.3 missing xenbr0 new tmpbridge

Re: [Xen-users] xen-3.3 missing xenbr0 new tmpbridge